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Table 7 Comparison of prediction results of three features

From: Prediction of acid radical ion binding residues by K-nearest neighbors classifier

LigandFeatureOptimal k valueSn (%)Sp (%)Acc (%)FPR (%)MCC
NO2C7757.176.566.823.50.343
 P7581.661.271.438.80.438
 R7581.679.680.620.40.612
CO32−C3563.659.561.640.50.231
 P3175.667.771.732.30.435
 R11574.478.576.421.50.529
SO42−C2566.061.763.938.30.277
 P3373.571.272.328.80.447
 R3775.869.272.530.80.450
PO43−C7169.166.367.733.70.355
 P1576.075.475.724.60.514
 R6176.474.075.226.00.504